The Ultimate Fighting Championship heads to Toronto on Tuesday for a special UFC 129: St-Pierre vs. Shields press conference as tickets are about to go on sale. The UFC has the Rogers Centre set up for 42,000 fans for the April 30 fight.

St-Pierre puts his UFC welterweight title, as well as a potential move up to 185 pounds for a mega-fight with middleweight champion Anderson Silva, on the line when he faces No. 1 contender Jake Shields.